Preassembled Display Systems and Methods of Installation Thereof

ABSTRACT

A preassembled display system is assembled at a first location by attaching a plurality of display panels to a frame. The preassembled display system is loaded onto a transportation vehicle. Next, the preassembled display system is moved to a second location in a transportation vehicle. The display unit is installed at the second location by attaching the preassembled display system to a mounting unit. A receiver box for providing media to display at the plurality of display panels is attached. The attaching of the receiver box may be performed at the first location and/or at the second location. The plurality of display panels are electrically connected to the receiver box. Again, the electrically connecting may be performed at the first location and/or at the second location.

This application is a continuation application of U.S. patentapplication Ser. No. 15/390,277 filed on Dec. 23, 2016, which is adivisional of U.S. application Ser. No. 14/641,189 filed on Mar. 6,2015, which is a continuation of U.S. application Ser. No. 14/582,908filed on Dec. 24, 2014 (Attorney Docket Number UVI-012). All of theabove applications are incorporated herein by reference in theirentirety. U.S. application Ser. No. 14/582,908 claims the benefit ofU.S. Provisional Application No. 62/093,157 filed on Dec. 17, 2014(Attorney Docket Number UVI-012P), U.S. Provisional Application No.62/025,463 filed on Jul. 16, 2014 (Attorney Docket Number UVI-007P), andU.S. Provisional Application No. 61/922,631 filed on Dec. 31, 2013(Attorney Docket Number UVI-004P), which applications are herebyincorporated herein by reference in their entirety.

CROSS-REFERENCE TO RELATED APPLICATIONS

The following patents and applications are related:

-   -   U.S. patent application Ser. No. 15/885,284, filed Jan. 31, 2018        (co-pending)    -   U.S. patent application Ser. No. 15/881,524, filed Jan. 26, 2018        (co-pending)    -   U.S. patent application Ser. No. 15/881,394, filed Jan. 26, 2018        (co-pending)    -   U.S. patent application Ser. No. 15/880,295, filed Jan. 25, 2018        (co-pending)    -   U.S. patent application Ser. No. 15/866,294, filed Jan. 9, 2018        (co-pending)    -   U.S. patent application Ser. No. 15/331,681, filed Oct. 21, 2016        (co-pending)    -   U.S. patent application Ser. No. 14/341,678, filed Jul. 25, 2014        (now U.S. Pat. No. 9,195,281)    -   U.S. patent application Ser. No. 14/948,939, filed Nov. 23, 2015        (now U.S. Pat. No. 9,535,650)    -   U.S. patent application Ser. No. 15/396,102, filed Dec. 30, 2016        (now U.S. Pat. No. 9,642,272)    -   U.S. patent application Ser. No. 15/582,059, filed Apr. 28, 2017        (now U.S. Pat. No. 9,832,897)    -   U.S. patent application Ser. No. 15/802,241, filed Nov. 2, 2017        (co-pending)    -   U.S. patent application Ser. No. 14/444,719, filed Jul. 28, 2014        (now U.S. Pat. No. 9,134,773)    -   U.S. patent application Ser. No. 14/850,632, filed Sep. 10, 2015        (now U.S. Pat. No. 9,349,306)    -   U.S. patent application Ser. No. 15/162,439, filed May 23, 2016        (now U.S. Pat. No. 9,513,863)    -   U.S. patent application Ser. No. 15/369,304, filed Dec. 5, 2016        (now U.S. Pat. No. 9,916,782)    -   U.S. patent application Ser. No. 14/444,775, filed Jul. 28, 2014        (now U.S. Pat. No. 9,081,552)    -   U.S. patent application Ser. No. 14/627,923, filed Feb. 20, 2015        (now U.S. Pat. No. 9,131,600)    -   U.S. patent application Ser. No. 14/829,469, filed Aug. 18, 2015        (now U.S. Pat. No. 9,226,413)    -   U.S. patent application Ser. No. 14/981,561, filed Dec. 28, 2015        (now U.S. Pat. No. 9,372,659)    -   U.S. patent application Ser. No. 14/444,747, filed Jul. 28, 2014        (now U.S. Pat. No. 9,069,519)    -   U.S. patent application Ser. No. 14/550,685, filed Nov. 21, 2014        (now U.S. Pat. No. 9,582,237)    -   U.S. patent application Ser. No. 14/641,130, filed Mar. 6, 2015        (now U.S. Pat. No. 9,164,722)    -   U.S. patent application Ser. No. 15/409,288, filed Jan. 18, 2017        (co-pending)    -   U.S. patent application Ser. No. 14/582,908, filed Dec. 24, 2014        (now U.S. Pat. No. 9,416,551)    -   U.S. patent application Ser. No. 14/641,189, filed Mar. 6, 2015        (now U.S. Pat. No. 9,528,283)    -   U.S. patent application Ser. No. 15/390,277, filed Dec. 23, 2016        (co-pending)    -   U.S. patent application Ser. No. 14/720,544, filed May 22, 2015        (co-pending)    -   U.S. patent application Ser. No. 14/720,560, filed May 22, 2015        (now U.S. Pat. No. 9,207,904)    -   U.S. patent application Ser. No. 14/720,610, filed May 22, 2015        (now U.S. Pat. No. 9,311,847)

TECHNICAL FIELD

The present invention relates generally to displays, and, in particularembodiments, to preassembled display systems and methods of installationthereof.

BACKGROUND

Large displays (e.g., billboards), such as those commonly used foradvertising in cities and along roads, generally have one or morepictures and/or text that are to be displayed under various light andweather conditions. As technology has advanced and introduced newlighting devices such as the light emitting diode (LED), such advanceshave been applied to large displays.

However, installation of such large displays is time consuming and anexpensive operation. Further, the operating costs of these largedisplays may be large due to the difficulty of servicing such displays.

SUMMARY

Example embodiments of the present disclosure provide a system andmethod for installing preassembled modular display panels.

In accordance with an example embodiment of the present invention, apreassembled display system is assembled at a first location byattaching a plurality of display panels to a frame. The preassembleddisplay system may be at least 6 ft.×12 ft. The preassembled displaysystem is loaded onto a transportation vehicle. Next, the preassembleddisplay system is moved to a second location in a transportationvehicle. The display unit is installed at the second location byattaching the preassembled display system to a mounting unit. A receiverbox for providing media to display at the plurality of display panels isattached. The attaching of the receiver box may be performed at thefirst location and/or at the second location. The plurality of displaypanels are electrically connected to the receiver box. Again, theelectrically connecting may be performed at the first location and/or atthe second location.

In accordance with another example embodiment of the present invention,a plurality of display sections is assembled at a first location. Eachdisplay section includes a plurality of display panels mechanicallyattached to a frame. The assembled display sections are transported fromthe first location to a second location that is at least five miles awayfrom the first location. The plurality of display sections is mounted atthe second location to install the display unit. The display unit may beinstalled by attaching the frame of each display section to the frame ofat least one other display section.

In accordance with another example embodiment of the present invention,a method of performing an installation of a display unit includesforming a preassembled display system at a first location by attaching aplurality of display panels to a frame, the preassembled display systembeing at least 6 ft.×12 ft. The preassembled display system is loadedonto a transportation vehicle and moved toward a second location in thetransportation vehicle. At the second location, a preexisting displaymounted on a mounting frame of a billboard is removed. The preassembleddisplay system is lifted up as a single unit to the mounting frame andthe preassembled display system is attached to the mounting frame of thebillboard.

In accordance with another example embodiment of the present invention,a method of performing an installation of a display unit includesforming a preassembled display system at a first location by attaching aplurality of display panels to a frame, the preassembled display systembeing at least 6 ft.×12 ft. The preassembled display system is loadedonto a transportation vehicle and the transportation vehicle with thepreassembled display system is moved toward a second location. At thesecond location, the preassembled display system is lifted up as asingle unit to a mounting point on a wall of a building and thepreassembled display system is attached to the mounting point.

In accordance with another embodiment of the present invention, a methodof installing modular display panels includes forming a preassembleddisplay system at a first location by attaching a plurality of displaypanels to a frame, attaching a receiver box for providing media todisplay at the plurality of display panels, and electrically connectingthe plurality of display panels to the receiver box. The preassembleddisplay system is then shipped from the first location to a secondlocation.

In accordance with another embodiment of the present invention, a methodof installing modular display panels includes receiving a preassembleddisplay system assembled at a first location, the preassembled displaysystem comprising a plurality of display panels attached to a framecomprising a plurality of vertical beams, and a receiver box attached tothe frame, and configured to provide media to display at the pluralityof display panels, the plurality of display panels being electricallyconnected to the receiver box. At a second location, a preexistingdisplay mounted on a mounting frame of a billboard is removed. Thepreassembled display system is attached to the mounting frame.

BRIEF DESCRIPTION OF THE DRAWINGS

For a more complete understanding of the present invention, and theadvantages thereof, reference is now made to the following descriptionstaken in conjunction with the accompanying drawings, in which:

FIG. 1 illustrates a modular multi-resolution display system inaccordance with embodiments of the present invention;

FIG. 2 illustrates a modular display panel attached to a supportingframe in accordance with an embodiment of the present invention;

FIG. 3 illustrates a frame used to provide mechanical support to themodular display panel in accordance with an embodiment of the presentinvention;

FIG. 4 illustrates one unit of the modular display panel in accordancewith an embodiment of the present invention;

FIG. 5 illustrates a magnified view of two display panels next to eachother and connected through the cables such that the output cable of theleft display panel is connected with the input cable of the next displaypanel in accordance with an embodiment of the present invention;

FIG. 6 illustrates a modular multi-panel display system comprising aplurality of LED display panels connected together using theafore-mentioned cables in accordance with an embodiment of the presentinvention;

FIGS. 7A-7C illustrate alternative embodiments of the modular displaypanel attached to a supporting frame in accordance with embodiments ofthe present invention, wherein FIG. 7A illustrates a view highlightingthe supporting frame, and wherein FIGS. 7B and 7C illustrate alternativestructural embodiments of the supporting frame;

FIG. 8 illustrates a method of assembling a modular multi-panel displaysystem in accordance with an embodiment of the present invention;

FIG. 9 illustrates a method of assembling a modular multi-panel displayin accordance with an embodiment of the present invention;

FIG. 10 illustrates a method of assembling a modular multi-panel displayin accordance with an embodiment of the present invention;

FIGS. 11A-11D illustrate embodiments of the present invention forforming a large display panel by installing a plurality of preassembleddisplay units or display sections, wherein FIG. 11A is a projectionview, wherein FIG. 11B illustrates one example embodiment of themechanical features used to align and/or mechanically support theplurality of preassembled display units, wherein FIG. 11C illustratesanother embodiment in which some of the first features and secondfeatures may be interchanged to form a tighter fit, and wherein FIG. 11Dillustrates a further embodiment showing additional adjustment featuresfor adjusting the vertical and horizontal distance between adjacentpreassembled display units;

FIGS. 12A-12C illustrate an on-site wall mounting of a preassembleddisplay unit in accordance with embodiments of the present invention,wherein FIG. 12A illustrates a front view of the mounting wall and FIG.12B illustrates a side view illustrating the mounting wall and themounted preassembled display unit, wherein FIG. 12C illustrates a sideview of a further embodiment in which the plurality of beams is directlymounted to the mounting wall;

FIGS. 13A and 13B illustrate a method of retrofitting a preexistingbillboard in accordance with an embodiment of the present invention;

FIG. 13C illustrates an alternative embodiment of the present inventionshowing a stand mount;

FIGS. 14A-14D illustrate specific examples of an assembled displaysystem, wherein FIG. 14A illustrates that the modular preassembleddisplay unit includes a number of display panels mounted to a frame,wherein a side view of the display system is shown in FIG. 14B and backviews are shown in FIGS. 14C and 14D;

FIGS. 14E-14G illustrate specific examples of a cage without the displaypanels that can be used with the system of FIGS. 14A-14D, wherein FIG.14E illustrates the cage without the display panels, wherein other viewsof the frame are shown in FIGS. 14F and 14G;

FIGS. 15A-15E illustrate specific examples of an assembled displaysystem, wherein FIG. 15A illustrates a preassembled display system inaccordance with an embodiment of the present invention, wherein FIG. 15Billustrates a magnified view of the preassembled display systemillustrated in FIG. 15A in accordance with an embodiment of the presentinvention, wherein FIG. 15C illustrates a preassembled display systemincluding a non-linear shape in accordance with an embodiment of thepresent invention, wherein FIG. 15D illustrates a magnified portion ofthe base of a preassembled display system including a non-linear shapein accordance with an embodiment of the present invention, wherein FIG.15E illustrates a preassembled display unit in which a receiver box isinstalled;

FIG. 16 illustrates an assembled multi-panel display that is ready forshipment;

FIGS. 17A-17F illustrate different projection views of a preassembleddisplay system illustrating the features used for stacking and alignmentin accordance with an embodiment of the present invention, wherein FIG.17A illustrates a preassembled display system in accordance with anembodiment of the present invention, wherein FIG. 17B illustratesanother magnified projection view of the cage showing the platform andthe second joining feature, wherein FIG. 17C illustrates a sideprojection view of the cage showing the platform and the second joiningfeature, wherein FIG. 17D illustrates a magnified projection view ofanother side of a cage showing a jack screw and a first joining feature,wherein FIG. 17E illustrates another magnified projection view showingthe first joining feature and the jack screw, and wherein FIG. 17Fillustrates a magnified back side projection view showing the firstjoining feature and the jack screw;

FIG. 18 illustrates a method of installing the display unit, which maybe either a billboard or mounted directly on a wall of a building; and

FIG. 19 illustrates a method of performing an installation of a displayunit, which may be either a billboard or mounted directly on a wall of abuilding.

DETAILED DESCRIPTION OF ILLUSTRATIVE EMBODIMENTS

Installation of large display panels is a labor intensive processrequiring skilled labor working in dangerous conditions for extendedtimes. For example, to install a conventional display on a largemulti-story building, the installers have to climb to the mounting wall(typically many stories high) and individually screw in each display andthe corresponding cables etc. This is both time consuming and poses asignificant safety threat thereby increasing the cost of the systemdramatically.

Embodiments of the invention provide preassembled display panel units,each of which provides a completely self-contained building block thatis lightweight. Because of the light weight capabilities, most of theassembly of the display units may be performed at a factory, assemblyfacility, or warehouse rather than on-site dramatically lowering thesystem cost.

These display units are designed to be weather proof, without a heavycabinet, although it is understood that the present disclosure may beapplied to lighting for any type of interior and/or exterior display.The lightweight design allows for easier installation and maintenance,thus lowering total cost of ownership.

Embodiments of the invention provide building block panels that areconfigurable with future expandability. These displays can offercomplete expandability to upgrade in the future without having toreplace the entire display. Installation is fast and easy with verylittle down-time, which allows any electronic message to be presentedmore quickly.

In some embodiments, the display panels are “hot swappable.” By removingone screw in each of the four corners of the panel, servicing thedisplay panel is fast and easy. Since a highly-trained, highly-paidelectrician or technician is not needed to correct a problem, costbenefits can be achieved.

FIG. 1 illustrates a modular display panel in accordance with anembodiment of the present invention. FIG. 2 illustrates a modulardisplay panel attached to a supporting frame in accordance with anembodiment of the present invention. FIG. 3 illustrates a frame used toprovide mechanical support to the modular display panel in accordancewith an embodiment of the present invention.

The multi-panel modular preassembled display unit 10 comprises aplurality of LED display panels 50. In various embodiments describeherein, the light emitting diode (LED) display panels 50 are attached toa frame 20 or skeletal structure that provides the framework forsupporting the LED display panels 50. The LED display panels 50 arestacked next to each other and securely attached to the frame 20 usingattachment plate 30, which may be a corner plate in one embodiment. Theattachment plate 30 may comprise holes through which attachment features90 may be screwed in, for example.

Referring to FIGS. 1 and 2, the LED display panels 50 are arranged in anarray of rows and columns. Each LED display panel 50 of each row iselectrically connected to an adjacent LED display panel 50 within thatrow.

Referring to FIG. 3, the frame 20 provides mechanical support andelectrical connectivity to each of the LED display panels 50. The frame20 comprises a plurality of beams 32 forming the mechanical structure.The frame 20 comprises a top bar, a bottom bar, a left bar, a right bar,and a plurality of vertical bars extending from the top bar to thebottom bar, the vertical bars disposed between the left bar and theright bar. The top bar, the bottom bar, the left bar and the right barcomprise four inch aluminum bars, and the vertical bars comprise2″×4″×½″ aluminum tubes. The top bar, the bottom bar, the left bar andthe right bar are each capable of bearing a load of 1.738 lb/ft and thevertical bars are each capable of bearing a load of 3.23 lb/ft.

The frame 20 may include support structures for the electrical cables,data cables, electrical power box powering the LED displays panels 50,and the data receiver box controlling power, data, and communication tothe LED displays panels 50.

However, the frame 20 does not include any additional enclosures toprotect the LED panels, data and power cables from the environment.Rather, the frame 20 is exposed to the elements and further exposes theLED display panels 50 to the environment. The frame 20 also does notinclude air conditioning, fans, or heating units to maintain thetemperature of the LED display panels 50. Rather, the LED display panels50 are hermetically sealed themselves and are designed to be exposed tothe outside ambient. Further, in various embodiments, there are noadditional cabinets that are attached to the frame 20 or used forhousing the LED display panels 50. Accordingly, in various embodiments,the multi-panel modular preassembled display unit 10 is designed to beonly passively cooled.

FIG. 4 illustrates one display panel 50 of the multi-panel modularpreassembled display unit 10 comprising an input cable 160 and an outputcable 165. The LED display panels 50 are electrically connected togetherfor data and for power using the input cable 160 and the output cable165.

Each modular LED display panel 50 is capable of receiving input using anintegrated data and power cable from a preceding modular LED displaypanel and providing an output using another integrated data and powercable to a succeeding modular LED display panel. Each cable ends with anendpoint device or connector, which is a socket or alternatively a plug.

Referring to FIG. 4, in accordance with an embodiment, a LED displaypanel 50 comprises an attached input cable 160 and an output cable 165,a first connector 170, a second connector 175, and a sealing cover 180.The sealing cover 180 is configured to go over the second connector 175thereby hermetically sealing both ends (first connector 170 and thesecond connector 175). The sealing cover 180, which also includes alocking feature, locks the two cables together securely. The input cable160 and the output cable 165 comprise integrated data and power wireswith appropriate insulation separating them.

As an example, an LED panel includes a substrate that forms a frontsurface of the panel. The substrate in the present example isrectangular in shape, with a top edge, a bottom edge, a right edge, anda left edge. A substrate surface includes “pixels” that are formed byone or more LEDs on or within the substrate. In the present example,each pixel includes four LEDs arranged in a pattern (e.g., a square).For example, the four LEDs that form a pixel may include a red LED, agreen LED, a blue LED, and one other LED (e.g., a white LED). In someembodiments, the other LED may be a sensor. It is understood that moreor fewer LEDs may be used to form a single pixel, and the use of fourLEDs and their relative positioning as a square are for purposes ofillustration only.

In some embodiments, the substrate may form the entire front surface ofthe panel, with no other part of the panel being visible from the frontwhen the substrate is in place. In other embodiments, a housing may bepartially visible at one or more of the edges of the substrate. Thesubstrate may form the front surface of the panel, but may not be theouter surface in some embodiments. For example, a transparent ortranslucent material or coating may overlay the substrate and the LEDs,thereby being positioned between the substrate/LEDs and the environment.

The housing defines a cavity. Structural cross-members may be used toprovide support to a substrate (e.g., the substrate of the presentexample). The cross-members, as well as other areas of the housing, mayinclude supports against which the substrate can rest when placed intoposition. As shown, the supports may include a relatively narrow tipsection that can be inserted into a receiving hole in the back of thesubstrate and then a wider section against which the substrate can rest.

FIG. 5 illustrates two display panels next to each other and connectedthrough the cables such that the output cable 165 of the left displaypanel 50A is connected with the input cable 160 of the next displaypanel 50B. The sealing cover 180 locks the two cables together asdescribed above.

FIG. 6 illustrates a modular multi-panel display system comprising aplurality of LED display panels connected together using theafore-mentioned cables.

Referring to FIG. 6, for each row, a LED display panel 50 at a first endreceives an input data connection from a data source and has an outputdata connection to a next LED display panel in the row. Each further LEDdisplay panel 50 provides data to a next adjacent LED display paneluntil a LED display panel 50 at second end of the row is reached. Thepower line is run across each row to power the LED display panels 50 inthat row.

In one embodiment, the plurality of LED display panels 50 are arrangedin ten rows and thirty-two columns so that the integrated display panel100 has a display surface that is approximately fifty feet and fourinches wide and fifteen feet and eight and three-quarters inches high.

In various embodiments, as illustrated in FIGS. 2 and 6, a data receiverbox 40 is mounted to the mechanical support structure or frame 20. Thedata receiver box 40 is configured to provide power, data, andcommunication to the LED display panels 50. With a shared receiver box40, the panels themselves do not need their own receiver card. Thisconfiguration saves cost and weight.

FIG. 7, which includes FIGS. 7A-7C, illustrates alternative embodimentsof the modular display panel attached to a supporting frame inaccordance with embodiments of the present invention.

The embodiment of FIG. 7A differs from the embodiment described in FIG.2 in that the horizontal beams 1320A may be used to support the displaypanels 1350. In one embodiment, both horizontal beams 1320A and verticalbeams 1320B may be used to support the display panels 1350. In anotherembodiment, horizontal beams 1320A may be used to support the displaypanels 1350 but the vertical beams 1320B may be used to reinforce theframe structure rather than directly support the display panels 1350.

FIG. 7B illustrates an alternative embodiment including additional beams1320C, which may be narrower than the other beams of the frame. One ormore of the thinner beams 1320C may be placed between the regular sizedvertical beams 1320B.

FIG. 7C illustrates a further embodiment illustrating both a top view,bottom view and side view of a frame. The frame 20 may be attached to awall or other structure using plates 35. The frame 20 may comprise aplurality of vertical beams and horizontal beams. In one embodiment, theframe 20 comprises an outer frame having a top bar, a bottom bar, a leftbar and a right bar. A display panel 1350 may be supported between twoadjacent beams marked as L3 beams, which may be thinner (smallerdiameter) and lighter than the thicker and heavier load bearing beams131 marked as L2 beams used for forming the outer frame. As anillustration, the L2 beams may be 4″ while the L3 beams may be 3″ in oneexample.

FIG. 8 illustrates a method of assembling a modular multi-panel displaysystem in accordance with an embodiment of the present invention.

A mechanical support structure such as the frame 20 described above isassembled taking into account various parameters such as the size andweight of the multi-panel display, location and zoning requirements, andothers (box 801). For example, as previously described, the mechanicalsupport structure includes a plurality of vertical bars and horizontalbars. The mechanical support structure may be fabricated from acorrosion resistant material in one or more embodiments. For example,the mechanical support structure may be coated with a weather-proofingcoating that prevents the underlying substrate from corroding. If acatwalk is needed, for example, the frame may include such a structure.

A plurality of LED display panels are mounted on to the mechanicalsupport structure so as to form an integrated display panel thatincludes an array of rows and columns of LED display panels as describedin various embodiments (box 803). Each of the LED display panels ishermetically sealed. Mounting the LED display panels may comprisemounting each LED display panel to a respective vertical beam using anattachment plate.

Each of the LED display panels is electrically connected to a datasource and to a power source (box 805). For example, a first LED displaypanel in each row is electrically coupled to the display source. Theother LED display panels in each row may be daisy-chain coupled to anadjacent LED display panel.

FIG. 9 illustrates a method of assembling a modular multi-panel displayin accordance with an embodiment of the present invention.

In one embodiment, referring to FIG. 9, the display panels 50 may becoupled (arrows) to vertical beams 32 using connecting plates 30 asillustrated in FIG. 2. The cage 34 is then attached (arrows) to thevertical beams 32 using another set of connecting plates.

Since the assembled display structure is light weight, significantassembly advantages can be achieved. For example, the panels can beassembled within a warehouse that is remote from the final locationwhere the display will be utilized. In other words, the panels can beassembled at a first location, shipped to a second location andfinalized at the second location.

FIG. 10 illustrates a method of forming a preassembled modularmulti-panel display in accordance with an embodiment of the presentinvention.

Referring to FIG. 10, a mechanical support structure such as a frame isassembled as described above in various embodiments (box 1021). Aplurality of LED display panels is attached directly to the mechanicalsupport structure using a plurality of coupling mechanisms (box 1022).The coupling mechanisms may include additional structures such asconnecting plates, for example.

A receiver box is attached to the mechanical support structure (box1023). In one embodiment, the receiver box includes power circuitry withan ac power input and an ac power output. The receiver box furtherincludes digital circuitry configured to process media data to bedisplayed by the LED display panels. AC power from the receiver box iselectrically connected to each of the LED display panels (box 1024).Media data from the receiver box is electrically connected to each ofthe LED display panels (box 1025). For example, a plurality ofintegrated data and power cables are interconnected.

Embodiments of the present invention will now be described to illustrateinstallation of the preassembled display panel system at an on-sitelocation.

FIGS. 11A-11D illustrate an embodiment of the present invention forforming a large display panel by installing a plurality of preassembleddisplay units or display sections.

In various embodiments, the preassembled display units 10 may be atleast 12 ft×24 ft, i.e., which is 12 ft tall and 24 ft wide. Othercommon sizes for the preassembled display units 10 may comport to thestandard billboard sizes used in the country of installation such as,for example, 6 ft×12 ft, 12 ft×25 ft, 10.5 ft×36 ft, 12 ft×40 ft, 14ft×48 ft, 16 ft×60 ft, 20 ft×50 ft, and 20 ft×60 ft.

In one or more embodiments, the very large display panel may be formedby joining together a plurality of preassembled display units 10. Forexample, the largest size of the preassembled display units 10 may belimited by the size permitted for safe transportation in a rail car ortruck or that is needed for the particular application. As such, thepreassembled display units 10 may not be larger than the maximum sizeallowed for transportation in a truck, which may be governed by locallaws as well as practical limitations.

Each plurality of preassembled display units 10 may include one or moreladders 145 and one or more catwalks 140 for accessing the individualdisplay panels conveniently. Further, the plurality of preassembleddisplay units 10 may include doors 146L, 146R, which may be removedduring the installation so as to form a continuous catwalk 140 from onedisplay unit to another after the installation is completed.Alternatively, the doors may be opened as needed during operation of thedisplay system by servicing personnel.

In various embodiments, the plurality of preassembled display units 10includes the display panels and the receiver boxes mounted onto theframe. In some embodiments, each of the plurality of preassembleddisplay units 10 may include completed electrical connections betweenthe display panels and the receiver boxes.

In various embodiments, the plurality of preassembled display units 10may be designed to accommodate specific features of the mounting wall ormounting billboard pillar. For example, mounting on to a historicbuilding may require specific compliance with various rules with regardto the load bearing mechanical design, electrical design, appearance,and others. As the display system is factory assembled, these rules maybe easily taken into account when designing and building thepreassembled display unit.

If the final size of the display panel is larger than the largest sizeof the preassembled display panel, a simple on-site installation may beperformed to mechanically connect the individual plurality ofpreassembled display units 10 (shown by the arrows in FIG. 11A). Forexample, each of the plurality of preassembled display units 10 mayinclude mechanical features so as to align and/or mechanically supportthe plurality of preassembled display units 10 stacked above. However,in various embodiments, the preassembled display unit 10 comprising theframe and a plurality of display panels are lifted and mounted togetheras one unit and stacked with other similar preassembled units.

FIG. 11B illustrates one example embodiment of the mechanical featuresused to align and/or mechanically support the plurality of preassembleddisplay units.

Referring to FIG. 11B, each of the preassembled display units 10 mayinclude a ladder 145, which when aligned correctly forms a continuousvertical pathway to access various levels of the catwalk represented asCW Level 1, CW Level 2, CW Level 3. A good alignment of the preassembleddisplay units 10 is necessary to provide an appealing visual effect aswell as to align the ladders 145 and the catwalk 140 in the adjacentpreassembled display units 10. Accordingly, alignment features areprovided, which may be used to align as well as to mechanically supportthe preassembled display units 10. For example, the alignment featuremay be a telescopic joint, a slip joint, a ball and socket joint invarious embodiments.

FIG. 11B illustrates a joint having a first joining feature 151, whichmay comprise a solid inner barrel or a hollow tube and a second joiningfeature 152, which may comprise a concentric barrel feature configuredto receive the solid inner barrel or a hollow tube of the first joiningfeature 151. The second joining feature 152 may be a square pipe in oneembodiment while the first joining feature 151 may be a solid squareblock, or even a square pipe in another embodiment. The first joiningfeature 151 has a smaller outer dimension than the second joiningfeature 152 so that it can slide into the second joining feature 152 invarious embodiments.

One of the preassembled display units 10 may be positioned over anotherpreassembled display unit 10, and the first joining feature 151 insertedinto the second joining feature 152. The joint may be secured usingscrew or bolts 155, for example. The preassembled display units 10 maycomprise additional features such as leveling planes to ensure properhorizontal alignment.

The preassembled display units 10 are thus assembled to form one largedisplay. Advantageously, in various embodiments, the installation ofsuch a large panel can be accomplished in relatively short time durationwithout expending on-site labor. For example, on-site installation of aconventional system can be very labor intensive, which increases thecost and poses significant risk to the installer. As the preassembledpanels are finished out in the factory, the on-site installation processis much easier reducing costs significantly.

FIG. 11C illustrates another embodiment in which some of the firstfeatures and second features may be interchanged to form a tighter fit.

FIG. 11D illustrates a further embodiment showing additional adjustmentfeatures for adjusting the vertical and horizontal distances betweenadjacent preassembled display units. Additionally embodiments of thepresent invention may include height adjustment features such a jackbolt that may be used to adjust the vertical distance V142 between theadjusted preassembled display units 10. As an example, the heightadjustment features may include a jack screw 153 whose height may beadjusted and a platform 154. In various embodiments, the verticaldistance V142 between the adjusted preassembled display units 10 isabout the same to the vertical distance between adjacent display panelsof the plurality of display panels 50 within each preassembled displayunit 10. Therefore, once the preassembled display units 10 are stackedtogether, the separation between the adjacent preassembled display units10 is visually indistinguishable. Such jacks may be added to thehorizontal sides of the chassis 34 as well for the same reason, forexample.

FIGS. 12A-12C illustrate an on-site wall mounting of a preassembleddisplay unit in accordance with an embodiment of the present invention.FIG. 12A illustrates a front view of the mounting wall and FIGS. 12B and12C illustrate side views illustrating the mounting wall and the mountedpreassembled display unit.

Referring now to FIG. 12A, the mounting wall 212 may be a featureattached to a building or other surface on which the display unit is tobe finished. The mounting wall 212 may be installed first inanticipation of the subsequent installation of preassembled displayunit. The mounting wall 212 includes one or more mounting points 214 orstringers. The mounting points 214 may be attached to the mounting wall212 if necessary at the time of the installation.

Referring to FIG. 12B, in one embodiment, the preassembled mountingdisplay unit 10 includes a cage 34 with vertical beams 32 on which theplurality of display panels 50 are mounted. The preassembled mountingdisplay unit 10 is mounted onto the mounting wall 212 as illustrated inFIG. 12B. In one embodiment, the preassembled mounting display unit 10is positioned so that the mounting fixtures 216 of the preassembledmounting display unit 10 are mechanically supported by the mountingpoints 214 or stringers. After correctly aligning the mounting fixtures216 with the mounting points 214, anchors 218 may be used to permanentlysecure the mounting fixtures 216 to the mounting points 214.

FIG. 12C illustrates a further embodiment in which the plurality ofbeams is directly mounted to the mounting wall. In this embodiment, acatwalk and the accompanying chassis may be skipped and the preassembledmounting display unit 10 comprising the vertical beams 32 may bedirectly mounted onto the mounting wall 212.

FIGS. 13A and 13B illustrate a method of retrofitting a preexistingbillboard in accordance with an embodiment of the present invention.

In various embodiments, preexisting displays, such as a billboard, maybe removed and fitted with one or more of the preassembled displayunits. The preexisting billboard to be retrofitted may be anon-electronic billboard and may also include mercury or fluorescentlighting. Embodiments of the present invention may be applied todifferent types of billboards including wooden billboards with woodensupports with dimensional lumber as the secondary support (A frame).Embodiments may be applied to retrofit a preexisting steel A-framebillboard comprising angle iron or steel supports with metal framing. Inone or more embodiments, a preexisting billboard may include a steelpole with an I-beam or equivalent as the primary support. In anotherembodiment, the preexisting billboard may include tubular steel supportof various circumferences and tubular steel framing as examples. Thepreexisting billboard may also include a catwalk in some embodiments.

Referring to FIG. 13A, a preexisting billboard may include a centralpole 312 supporting the billboard. The billboard may include a billboardframe 310, which may be different depending on the type of thebillboard. In various embodiments, the billboard frame 310 may include acatwalk.

The billboard may include a solid plywood layer 314 over which a canvas316 is mounted. The solid plywood layer 314 may have been mounted on thebillboard frame 310. The canvas 316 and the solid plywood layer 314 areremoved prior to mounting the preassembled display unit 10 in FIG. 13B.

In various embodiments, if the billboard frame 310 is retained, then thepreassembled display unit 10 may not need any additional catwalk as thebillboard frame 310 already includes a catwalk. In such embodiments, thepreassembled display unit 10 includes only a frame 20 (without thechassis) on which the plurality of display panels 50 have been mounted.Embodiments of the present invention may be applied to billboards ofdifferent configurations such as single face, back-to-back, or V-build,side-by-side, stacked, and tri-build configurations.

Referring to FIG. 13B, the preassembled display unit 10 comprising theframe 20 and the display panels 50 is mounted onto the mounting features324 of the billboard frame 310. If necessary, additional beams such asI-beams may be added to form stringers. Advantageously, the preassembleddisplay unit 10 is mounted quickly without extensive labor because ofthe modular nature of the preassembled display unit 10, which onlyrequires mechanically hoisting the preassembled display unit 10 andproperly aligning the preassembled display unit 10 with the mechanicalmounting features 324 of the preexisting billboard frame 310. Theinstallation is completed by mechanically securing the preassembleddisplay unit 10, e.g., using screws or anchors 218, to the preexistingbillboard frame 310.

FIG. 13C illustrates an alternative embodiment of the present inventionshowing a stand mount. In this embodiment, because of the light weightof the preassembled display unit 10, the preassembled display unit 10may be mounted on a stand mount 325, for example, to be displayed from ashop window. The actual mounting positions and mechanism may be suitablyadjusted according to the need (e.g., display aesthetics), the number ofdisplay units, and others.

After the mechanical connection is completed, the electrical connectionis made. However, in some embodiments, the only electrical connection tobe made is the connection of the main power and data cable (if any) tothe receiver box. This is because all the connections between thedifferent panels and the receiver box may have been preassembled at thefactory before the preassembled display unit 10 was shipped to the siteof the billboard. In other embodiments, the receiver box is connected tothe input cable of each of the plurality of display units. For example,the receiver box is connected to the first display unit and theremaining display units in the same row are daisy chain coupled.However, in both embodiments, the receiver box may already bemechanically secured while building the preassembled display unit.

Further, because of the lower power consumed by the preassembled displayunit, only a single phase power is needed advantageously even for verylarge displays. Conventionally, three phase power is needed for largedisplay because of the large power consumed by such units.

FIGS. 14A-14G illustrate specific examples of a preassembled displayunit 10 including the frame 20. As shown in FIG. 14A, the modularpreassembled display unit 10 includes a number of LED display panels 50mounted to frame 20. One of the display panels has been removed in thelower corner to illustrate the modular nature of the display. As aconsequence, and additionally, the easy access to the LED display panels50 from the rear of the preassembled display unit 10 enableshot-swapping. In other words, one or more of the display panels 50 maybe removed and replaced without powering down the display system duringoperation. This enables repair and replacement of any of the displaypanel without powering down the whole display unit.

A side view of the display system is shown in FIG. 14B and back viewsare shown in FIGS. 14C and 14D. FIG. 14B also illustrates the absence ofadditional protective cabinetry, for example, the back side 51 of thedisplay panels 50 remains exposed.

In this particular example, access is provided to the back of themodular display through a cage 34 that includes an enclosed catwalk 140.The catwalk is illustrated in the views without the mounted displaypanels as illustrated in FIG. 14E-14G. Since the display system 10 isgenerally highly elevated, a ladder 145 (see FIG. 14C) provides accessto the catwalk 140. In the back view of FIG. 14D, the cables of displaypanels are shown to be locked within itself for safe transportation.

FIG. 14E illustrates the cage 34 without the display panels 50. In thisembodiment, the beams of the cage 34 forming an outer frame are biggerthan the interior beams. In this case, the interior beams 161 arealigned in a plane outside those of the plurality of beams 32. Uponinstallation, the plates 162 may be rotated by 90° and fasten to thedisplay panels. Other views of the frame are shown in FIGS. 14F and 14G.

Additionally, in one or more embodiments, the assembled display may havethe size of the final on-site display. For example, the assembleddisplay structure at the factory may have the size of a standardbillboard (12′×24′). In such embodiments, as described previously, theon-site installation is minimal.

FIGS. 15A-15E illustrates different projection views of a preassembleddisplay system in accordance with an embodiment of the presentinvention.

FIG. 15A illustrates a preassembled display system in accordance with anembodiment of the present invention.

The preassembled display system includes a plurality of display panels50 coupled to the frame 20 that includes vertical beams 32 attached to acage 34. As in prior examples, the back side 51 of the display panels 50remains exposed. Similarly, as previously discussed, for each row, adisplay panel 50 at a first end receives an input data connection from adata source and has an output data connection to a next display panel inthe row.

The backside 51 of the display system is accessible from the backside ofthe display panels 50 from the cage 34, which may include a catwalk(shown in other figures, e.g., FIG. 15B). Consequently, replacing one ormore display panels 50 after the initial installation is easier. Thus, adefective display panel can be removed completely from the back side 51of the display system. Advantageously, no additional front side accessis necessary. Further, the display panels are cooled efficiently becausethey are exposed to the atmosphere and not enclosed within a cabinet asin conventional designs.

FIG. 15B illustrates a magnified view of the preassembled display systemillustrated in FIG. 15A in accordance with an embodiment of the presentinvention.

As described previously, a ladder 145 provides easy access to thevarious levels of the display system. In this illustrated example, thefinal display system comprises a plurality of preassembled display unitsstacked over one another. Thus, the ladder 145 provides access to thehigher levels.

FIG. 15C illustrates a preassembled display system including anon-linear shape in accordance with an embodiment of the presentinvention.

In various embodiments, the preassembled display system may beconstructed according to the design requirements of the mounting wall,for example, shape of the building wall. As illustrated in FIG. 15C, thepreassembled display unit 10 includes a first portion 10A and a secondportion 10B at an angle with the first portion.

FIG. 15D illustrates a magnified portion of the base of a preassembleddisplay system including a non-linear shape in accordance with anembodiment of the present invention.

In various embodiments, the preassembled display unit 10 may includealignment and mechanical features for stacking preassembled displayunits 10 over each other. Referring to FIG. 15D, the preassembleddisplay unit 10 includes a first mounting feature 144A and a secondmounting feature 144B for attaching to underlying chassis of theunderlying preassembled display unit 10. The second mounting feature144B may be part of an alignment mechanism such as for using a jack boltand will be described below in subsequent figures.

FIG. 15E illustrates a preassembled display unit 10 in which a receiverbox 40 is installed. Although the receiver box 40 is installed, it maynot be connected to the plurality of display panels. Rather, the cablesfrom the receiver box 40 may be wrapped up for secure transportation. Atthe installation site, the cables from the receiver box 40 may beconnected to cables of the plurality of displays.

FIG. 16 is an illustration of two assembled displays that are ready forshipment. In this embodiment, the preassembled display unit 10 may notinclude a chassis because the display unit is directly mounted on abillboard with a preexisting catwalk. Alternatively, the display unitmay be mounted on a stand such as a window stand, e.g., in a windowdisplay. These displays can be quite large, for example much larger thana 14×48 panel display. In some cases, a single display system is shippedas a series of sub-assemblies, e.g., as shown in the figure, and thenassembled into a full display on location. At the installation site, thepreassembled display units 10 may be removed from the shipping mount andraised and mounted onto a mounting wall or window stand.

FIGS. 17A-17F illustrates different projection views of a preassembleddisplay system illustrating the features used for stacking and alignmentin accordance with an embodiment of the present invention.

FIG. 17A illustrates a preassembled display system in accordance with anembodiment of the present invention.

As illustrated in FIG. 17A in one illustrated embodiment, one surface ofa cage 34 includes a second joining feature 152 and a platform 154. Inone embodiment, the second joining feature 152 is a hollow square tubeconfigured to receive another square tube or square block. The platform154 provides a solid base to receive a head of a jack screw and thus maybe used to lower an overlying chassis, which may be mounted subsequentlyover the illustrated cage 34.

FIG. 17B illustrates another magnified projection view of the cage 34showing the platform 154 and the second joining feature 152. FIG. 17Cillustrates a side projection view of the cage 34 showing the platform154 and the second joining feature 152.

FIG. 17D illustrates a magnified projection view of another side of acage showing a jack screw and a first joining feature.

As illustrated in FIG. 17D, the other side of the cage may include afirst joining feature 151 which may be a solid square block or squaretube having a diameter smaller than the second joining feature 152. Ajack screw 153 may be used to raise or lower the cage 34.

FIG. 17E illustrates another magnified projection view showing the firstjoining feature 151 and the jack screw 153. Thus, during subsequentinstallation, the first joining feature 151 is placed into an underlyingsecond joining feature of an underlying cage and then secured using asecuring bolt (not shown but, for example, see FIG. 11B).

The first joining feature 151 may include a first hole 151A and aperpendicular second hole 151B so that the first joining feature 151 maybe secured to a second joining feature 152 of an underlying cage fromany side.

FIG. 17F illustrates a magnified back side projection view showing thefirst joining feature 151 and the jack screw 153. The back side view(along with FIG. 17E) also shows that the first hole 151A is a throughhole extending completely through the first joining feature 151.

In various embodiments, the assembled multi-panel display systemincludes no cabinets. The assembled multi-panel display system is cooledpassively and includes no air conditioning or fans.

FIG. 18 illustrates a method of installing the display unit, which maybe either a billboard or mounted directly on a wall of a building. Apreassembled display system is assembled at a first location byattaching a plurality of display panels to a frame (box 502). In variousembodiments, the preassembled display system may be at least 6 ft. long,for example, may be at least 6 ft.×12 ft. in one embodiment. The firstlocation may be an assembling facility or a warehouse in variousembodiments. The preassembled display system is loaded onto atransportation vehicle (box 504). For example, the preassembled displaysystem may be loaded onto a shipping truck or rail cart. In variousembodiments, multiple shipping carriers may be used. Next, thepreassembled display system is moved to a second location in atransportation vehicle (box 506). The second location may be the finallocation at which the display system is to be set up. The display unitis installed at the second location by attaching the preassembleddisplay system to a mounting unit (box 508). A preexisting display maybe removed before installing the display unit at the second location.The attaching may be performed by lifting up the preassembled displaysystem as a single unit to the mounting unit.

A receiver box for providing media to display at the plurality ofdisplay panels is attached (box 510). In various embodiments, theattaching may be performed at the first location and/or at the secondlocation. The plurality of display panels are electrically connected tothe receiver box (box 512). Again, the electrically connecting may beperformed at the first location and/or at the second location.

FIG. 19 illustrates a method of performing an installation of a displayunit, which may be either a billboard or mounted directly on a wall of abuilding. Referring to FIG. 19, a plurality of display sections isassembled at a first location (602). Each display section includes aplurality of display panels mechanically attached to a frame. Theassembled display sections are transported from the first location to asecond location that is at least five miles away from the first location(box 604). The plurality of display sections is mounted at the secondlocation to install the display unit (box 606). The display unit may beinstalled by attaching the frame of each display section to the frame ofat least one other display section.

Although embodiments of the present invention have been described asbeing LED display panels, various embodiments of the present inventionmay also be applied to any type of display panel including organicdisplays including passive-matrix or active-matrix displays, organictransistor based displays, micro-mirror displays, plasma displays,liquid crystal displays, surface-conduction electron-emitter displays,field emission displays, and others.

While this invention has been described with reference to illustrativeembodiments, this description is not intended to be construed in alimiting sense. Various modifications and combinations of theillustrative embodiments, as well as other embodiments of the invention,will be apparent to persons skilled in the art upon reference to thedescription. It is therefore intended that the appended claims encompassany such modifications or embodiments.

What is claimed is:
 1. A method of performing an installation of adisplay unit, the method comprising: assembling a plurality of displaysections at a first location, each display section including a pluralityof display panels mechanically attached to a frame, wherein each of theplurality of display panels comprises a casing comprising plasticsidewalls, the casing being part of an outer surface of the display unitthat is exposed to an external environment, a printed circuit boardattached to the casing, the printed circuit board comprising a firstside and an opposite second side, a plurality of LEDs arranged as pixelsattached to the first side the printed circuit board, wherein the pixelsof each of the display panels are arranged in a rectangular arraycomprising at least fifty pixels, and a circuit for controlling theplurality of LEDs attached to the opposite second side of the printedcircuit board, wherein the circuit is disposed within the casing;transporting the display sections from the first location to a secondlocation that is at least five miles away from the first location; andmounting the plurality of display sections at the second location toinstall the display unit, the display unit being installed by attachingthe frame of each display section to the frame of at least one otherdisplay section.
 2. The method of claim 1, wherein the plurality ofdisplay sections are lifted up to a mounting point, wherein the mountingpoint is a mounting point of a preexisting billboard.
 3. The method ofclaim 1, wherein each display section includes a cat walk, each cat walkbeing assembled with a respective display section at the first location.4. The method of claim 3, wherein the plurality of display sections ismounted in an array of rows and columns, wherein each cat walk of thedisplay sections in a first one of the columns includes a ladder suchthat cat walks of the display sections of the first one of the columnshave a common ladder.
 5. The method of claim 3, wherein, after mountingthe plurality of display sections, the catwalks of adjacent displaysections are connected together to form a continuous walkway.
 6. Themethod of claim 3, wherein the plurality of display sections are mountedin an array of rows and columns, each display section with at least oneof the columns having a common ladder extending between display sectionsof that column.
 7. The method of claim 3, wherein the plurality ofdisplay sections are assembled into a plurality of super sections on asidewalk, and wherein the assembled plurality of super sections islifted to mounting points and mounted to form a single display.
 8. Themethod of claim 3, wherein the plurality of display sections are liftedand then assembled at mounting points.
 9. The method of claim 1, whereineach of the plurality of display panels is sealed to be waterproof, andwherein the frame of each display section comprises a corrosionresistant material.
 10. A method of performing an installation of adisplay unit, the method comprising: assembling a plurality of displaysections at a first location, wherein each of the plurality of displaysections comprises a first side and an opposite second side, wherein thefirst side of the display section comprises a display surface of thedisplay section, a frame comprising a top horizontal member, a bottomhorizontal member, a left vertical member, and a right vertical member,a plurality of display panels mechanically attached to the frame,wherein each of the plurality of display panels comprises a casingcomprising an outer surface of the display section, the outer surfacebeing part of the opposite second side of the display section, a printedcircuit board attached to the casing, a plurality of LEDs arranged aspixels attached to the printed circuit board, wherein the pixels of eachof the display panels are arranged in a rectangular array comprising atleast fifty pixels, and a data receiver box mounted directly to theframe, the data receiver box comprising a power management unitcomprising an alternating current/direct current (AC/DC) converter, thepower management unit configured to receive AC power and output DC powerto the plurality of display panels, and a signal processing unitconfigured to receive media packets and distribute the media packets tothe plurality of display panels, wherein the casing of each of theplurality of display panels is directly coupled to the frame;transporting the display sections from the first location to a secondlocation that is at least five miles away from the first location; andmounting the plurality of display sections at the second location toinstall the display unit, the display unit being installed by attachingthe frame of each display section to the frame of at least one otherdisplay section.
 11. The method of claim 10, wherein the plurality ofdisplay sections are lifted up to a mounting point, wherein the mountingpoint is a mounting point of a preexisting billboard.
 12. The method ofclaim 10, wherein the plurality of display sections are mounted in anarray of rows and columns, each display section with at least one of thecolumns having a common ladder extending between display sections ofthat column.
 13. The method of claim 10, wherein the plurality ofdisplay sections are assembled into a plurality of super sections on asidewalk, and wherein the assembled plurality of super sections islifted to mounting points and mounted to form a single display.
 14. Themethod of claim 10, wherein the plurality of display sections are liftedand then assembled at mounting points.
 15. The method of claim 10,wherein each of the plurality of display panels is sealed to bewaterproof, and wherein the frame of each display section comprises acorrosion resistant material.
 16. A method of performing an installationof a display unit, the method comprising: forming a preassembled displaysystem at a first location by attaching a plurality of display panels toa frame, the preassembled display system being at least 6 ft.×12 ft.,wherein each of the plurality of display panels comprises a casingcomprising plastic sidewalls, the casing being part of an outer surfaceof the display unit that is exposed to an external environment, aprinted circuit board attached to the casing, the printed circuit boardcomprising a first side and an opposite second side, a plurality of LEDsarranged as pixels attached to the first side of the printed circuitboard, wherein the pixels of each of the display panels are arranged ina rectangular array comprising at least fifty pixels, and a circuit forcontrolling the plurality of LEDs attached to the opposite second sideof the printed circuit board, wherein the circuit is disposed within thecasing; having the preassembled display system loaded onto atransportation vehicle; having the transportation vehicle with thepreassembled display system moved toward a second location; at thesecond location, removing a preexisting display mounted on a mountingframe; and lifting up the preassembled display system as a single unitto the mounting frame and having the preassembled display systemattached to the mounting frame, wherein, after the installation of thedisplay unit, surfaces of the casing of each of the plurality of displaypanels at both a first side of the casing and an opposite second side ofthe casing are exposed to an external environment.
 17. The method ofclaim 16, wherein the preassembled display system comprises a catwalkand a ladder.
 18. The method of claim 16, wherein the preexistingdisplay comprises a poster board mounted onto the mounting frame, and acanvas mounted over the poster board, and wherein removing thepreassembled display system comprises removing the canvas and the posterboard.
 19. The method of claim 16, wherein, the casing of each of theplurality of display panels comprises a thermally conductive material,the plurality of LEDs of each of the plurality of display panels areattached to a first side of the printed circuit board, and each of theplurality of display panels comprises a power supply for powering theplurality of LEDs, wherein the power supply is disposed at a second sideof the printed circuit board, the second side being opposite the firstside.
 20. The method of claim 16, wherein the preassembled displaysystem is further configured to be attached to the mounting frame of abillboard by attaching a plurality of the preassembled display systemsto the mounting frame of the billboard, a first one of the plurality ofthe preassembled display systems is stacked over a second one of theplurality of the preassembled display systems using joining featurescoupled to the frames of the first one and the second one of theplurality of the preassembled display systems, and the joining featuresare configured to facilitate alignment of the first one and the secondone of the plurality of the preassembled display systems.